Possibly because R has no idea what the 35.999999999999872-th element of a matrix is?
However you are coming up with these elements, you are running into a floating-point arithmetic problem (FAQ 7.31). Using round() might help. Sarah On Thu, Nov 18, 2010 at 6:19 AM, Alaios <ala...@yahoo.com> wrote: > Please take a look at the values below > ................. > [31,] 30.000000000000000 30.000000000000000 > [32,] 31.000000000000000 31.000000000000000 > [33,] 32.000000000000000 32.000000000000000 > [34,] 33.000000000000000 33.000000000000000 > [35,] 34.000000000000000 34.000000000000000 > [36,] 35.000000000000000 35.000000000000000 > [37,] 35.999999999999872 35.999999999999872 > > > These are entries in an array. These values are used as indexes inside a > matrix. > f[shweights[37,1],shweights[37,2]] works fine for me and returns correctly > the value. > > but when I try > f[shweights[,1],shweights[,2]] > I only get 36 out of 37 results (seems that in that case ignores the last > values, 37th) > ..... > [35,] 2.7245297165175781 > [36,] 2.7245297165175781 > > Why this might be happening? > Regards > Alex > > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
